Then I try running on Docker with fresh install, and the problem similar.After I try reinstall Ubuntu 14.04.2 LTS, and I try install the latest version of OnlyOffice (deb package). After install the mono runtime crash.

I have the same problem! Can you say a little bit more about you've solved this problem? I do a successful installation and start working with onlyoffice and after a crash in the middle of working with it, it crashed and throw this error. What can I do? Backup the data, do an fresh installation and hope the error doesn't come again? I would be happy about any help

Unhandled Exception:System.NullReferenceException: Object reference not set to an instance of an object at System.Threading.Timer+Scheduler.SchedulerThread () [0x00000] in <filename unknown>:0 at System.Threading.Thread.StartInternal () [0x00000] in <filename unknown>:0 [ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object at System.Threading.Timer+Scheduler.SchedulerThread () [0x00000] in <filename unknown>:0 at System.Threading.Thread.StartInternal () [0x00000] in <filename unknown>:0